This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source must be dual, and the table gives the resistors for the various scales.
The amplifier shown in figure 2 is based on the MAX9715 integrated circuit from Maxim...
When the sensor X1 is opened, the relay is energized. When waiting, the current drained is very...
This simple power or speed control for DC Motors uses a Power MOSFET as driver stage and a 4093 IC as...